Chapter 2, Problem 104QRT

Interpretation Introduction

Interpretation:

A common fertilizer used as lawns is designated as “$\text{16-4-8}$.”  These numbers means the fertilizer contains $\text{16\%}$ nitrogen-containing compounds, $\text{4}\text{.0}\text{\%}$ phosphorus containing compounds and $\text{8}\text{.0}\text{\%}$ potassium containing compounds.  $\text{40}\text{.0-lb}$ of fertilizer is bought and used in the lawn.  The mass of phosphorus containing compound that has been put on the lawn has to be calculated and if the phosphorus containing compound consists of $\text{43}\text{.64}\text{\%}$ phosphorus then the mass of phosphorus in $\text{40}\text{.0lb}$ of this fertilizer has to be calculated.